Re: [DRBD-user] Some info

2017-10-12 Thread Gandalf Corvotempesta
2017-10-12 10:17 GMT+02:00 Robert Altnoeder : > While it is not "bad", it limits the system to an active-passive cluster > configuration, because all logical volumes must be active on the same node. > The standard setup that we teach in our trainings, that we commonly

Re: [DRBD-user] drbd9: drbdmanage.storage.lvm_thinlv.LvmThinLv plugin - free space calculation still wrong (drbdmanage update-pool)

2017-10-12 Thread Roberto Resoli
Il 11/10/2017 14:57, Alexander Barton ha scritto: > Hi! > > Am 09.10.2017 um 15:35 schrieb Robert Altnoeder > : > >> On 10/09/2017 11:04 AM, Roberto Resoli wrote: >> >>> I currently remove snap_percent from used space in "update_pool" >>> function inside >>> >>>

Re: [DRBD-user] query regarding existing data replication

2017-10-12 Thread Yannis Milios
If you mean that you want to preserve your existing data, then yes it's possible. Read carefully this section in documentation: http://docs.linbit.com/docs/users-guide-8.4/#s-prepare-storage ...and specifically the section "It is not necessary for this storage area to be empty before you create

Re: [DRBD-user] Warning: Data Corruption Issue Discovered in DRBD 8.4 and 9.0

2017-10-12 Thread Eric Robinson
> Are you referring to this program? > https://github.com/algolia/trimtester/blob/master/trimtester.cpp > Yes, that is the program. > One thing that I can tell you right away is that this program does not appear > to > be very trustworthy, because it may malfunction due to the use of incorrect

Re: [DRBD-user] Warning: Data Corruption Issue Discovered in DRBD 8.4 and 9.0

2017-10-12 Thread Robert Altnoeder
On 10/11/2017 11:30 PM, Eric Robinson wrote: > The TrimTester program consists of three parts. The main executable > (TrimTester) just writes loads of data to the drive and tests for file > corruption. My C++ consultant says, "It writes sequential numbers > wrapped at 256, spanning multiple files.

Re: [DRBD-user] Some info

2017-10-12 Thread Robert Altnoeder
On 10/11/2017 09:14 PM, Gandalf Corvotempesta wrote: > is "raid -> drbd -> lvm" a standard configuration or something bad? I > don't want to put in production something "custom" and not supported. While it is not "bad", it limits the system to an active-passive cluster configuration, because all

Re: [DRBD-user] "drbdmanage resize-volume" fails

2017-10-12 Thread Robert Altnoeder
Yes, this is a known bug and was fixed on Oct 3 when another customer hit this problem, but has not yet been pushed to public repositories. The fix will be in the next release. br, -- Robert Altnoeder +43 1 817 82 92 0 robert.altnoe...@linbit.com LINBIT | Keeping The Digital World Running DRBD

[DRBD-user] query regarding existing data replication

2017-10-12 Thread Sandeep
Hi, am new to DRBD and plan to replicate "application data" . wanted to understand - as to how to setup drbd when disks have "existing application data" . drbd document talks about "initial device synchronization" - how can i ensure the synchronization does remove/change data on the

Re: [DRBD-user] drbd9: drbdmanage.storage.lvm_thinlv.LvmThinLv plugin - free space calculation still wrong (drbdmanage update-pool)

2017-10-12 Thread Alexander Barton
Hi! Am 09.10.2017 um 15:35 schrieb Robert Altnoeder : On 10/09/2017 11:04 AM, Roberto Resoli wrote: I currently remove snap_percent from used space in "update_pool" function inside /usr/lib/python2.7/dist-packages/drbdmanage/storage/lvm_thinlv.py It is quite

Re: [DRBD-user] "drbdmanage resize-volume" fails

2017-10-12 Thread Alexander Barton
Hi All, Hi Roland! So I tried to debug my "resize problem" (see below) further, and I think I found the culprit -- including a patch: drbdmanaged 0.99.12 tries to run the following command: drbdadm -vvv -- --assume-clean -c /var/lib/drbd.d/drbdmanage_vm-1001-disk-2.res resize